Remove material with fewer passes
Aggressive ceramic-hybrid grain delivers fast-cutting performance from rough leveling onward.
Z9 Performance Sanding Discs — 100-Disc Bundle + Optional Knot Filler
Free shipping on orders $75+ · Add the Knot-Filler System to this bundle and your $87.97 cart qualifies
Fast-cutting · self-sharpening · ceramic-hybrid
Cuts fast.Keeps cutting.
Z9 ceramic-hybrid grains expose fresh cutting edges as they wear—so you remove material quickly and keep moving without constantly reaching for another disc.
100 discs · 2 full packsSAVE $6 $49.98 bundle price
5-inch · 8-hole · 80/120/180/240 grits · Optional Knot-Filler add-on below
100-disc Z9 value pack
Buy two full packs.Save $6 on the discs.
Get 100 fast-cutting Z9 discs for $49.98—$6 less than buying two individual 50-packs. The Knot-Filler System is optional and is not included in the disc-bundle price.
100-disc bundle$49.98Two-pack value $55.98
Save $6.00 · 11%
40×80 grit
20×120 grit
20×180 grit
20×240 grit
Two 5-inch, 8-hole, hook-and-loop packs · Knot-Filler System not included · View product details
Optional add-on
Repair knots while you sandAdd the Knot-Filler System for $37.99
Your cart becomes $87.97—above $75 and eligible for free shipping.
$87.97 totalDiscs + Knot FillerFREE SHIPPING UNLOCKED
Add discs + Knot Filler · $87.97
The advantage in every pass
Fast material removal that stays productive.
The ceramic-hybrid grain fractures under use instead of simply wearing smooth—helping maintain cutting action from rough leveling through finish prep.
Self-sharpen while you sand
The grain continually fractures to expose fresh cutting edges instead of simply wearing smooth.
Keep useful cutting performance longer
Consistent cutting action means less time reaching for a replacement disc.
Quick-start grit selector
Choose the job.Get the sequence.
Pick the outcome you need and see a practical progression using the four grits inside each 5-inch mixed pack.
Your Z9 sequence80 → 120 → 180 → 240
Always test on scrap or an inconspicuous area. Adjust for the material, coating, tool, pressure, and required finish.
Level the cured repair with 80, erase the scratch pattern with 120 and 180, then finish-prep with 240.
80Level
120Smooth
180Refine
240Finish
Your Z9 sequence80 → 120 → 180
Always test on scrap or an inconspicuous area. Adjust for the material, coating, tool, pressure, and required finish.
Start at 80 for heavier leveling, then move through 120 and 180 for a clean, consistent surface.
80Level
120Smooth
180Refine
240Finish
Your Z9 sequence120 → 180 → 240
Always test on scrap or an inconspicuous area. Adjust for the material, coating, tool, pressure, and required finish.
Use 120 for general prep, refine with 180, and finish at 240 before many common coatings.
80Level
120Smooth
180Refine
240Finish
Your Z9 sequence180 → 240
Always test on scrap or an inconspicuous area. Adjust for the material, coating, tool, pressure, and required finish.
Use the finer half of the progression when the surface is already flat and only needs final refinement.
80Level
120Smooth
180Refine
240Finish
From the original Z9 offer
What Z9 customers notice.
Real projects and verified-buyer feedback.
★★★★★Verified buyer
“The sanding discs cut quicker than my current brand and appear to last longer. The knot-filler system works exactly as advertised.”
Paul · Akron, US
“The end result after sanding is better.” — Linda M.“Very aggressive—gets the job done.” — Mike S.
Read the original Z9 offer reviews
Know before you sand
Straight answers.No guesswork.
Starbond support is available Monday–Friday, 9:00 a.m.–5:00 p.m. Pacific.
Call 1-800-900-GLUEExactly what is included in the 100-disc bundle?
You receive two complete 50-disc Z9 multi-grit packs—100 discs total. Each 50-pack contains 20 discs in 80 grit and 10 each in 120, 180, and 240 grit. The Knot-Filler System is not included in the $49.98 disc-bundle price.
How does the optional Knot-Filler add-on work?
Select “Add discs + Knot Filler” to put both products in one cart. The $49.98 disc bundle plus the $37.99 Knot-Filler System totals $87.97—above $75 and eligible for free shipping.
What comes in the Knot-Filler System?
The system includes black and dark-brown medium-thick CA glues, a 6 oz aerosol accelerator, and application accessories for filling cracks, knots, and small wood voids.
What sanders do the bundle discs fit?
The bundle discs are 5-inch, 8-hole, hook-and-loop discs for compatible random orbital sanders. Confirm the pad diameter and hole pattern on your tool before ordering.
Can I add a 6-inch pack to the same order?
Yes. The separate 6-inch section can add a 49-hole 50-pack with the 5-inch bundle. The 6-inch pack requires a compatible sander and does not fit the 5-inch, 8-hole sanders used with the bundle.
What is Starbond’s return policy?
Eligible items may be returned within 30 days under Starbond’s current policy. Review the full shipping and return terms before ordering.
Different sander size?
Need 6-inch discs?
6-inch only
49-hole, Festool-compatible. This pack does not fit the 5-inch, 8-hole sanders used with the 100-disc bundle.
6-inch only · 49-hole
6-inch · 49-hole · 50-pack$27.99
6-inch mixed-grit pack
Add a separate 80/120/180/320 progression for compatible Festool 150 Series ETS and Rotex sanders.
20× 8010× 12010× 18010× 320
Add 100 discs + 6-inch pack · $77.97
Opens one Starbond cart with the 5-inch 100-disc bundle and the separate 6-inch 50-pack. Confirm both sander sizes before checkout.
100 ceramic-hybrid discs · optional repair add-on
Get 100 fast-cutting Z9 discs.Add knot repair only if you need it.
100 Z9 discs · 2 full packs$49.98
Add 100 discs