1-1/2 TR Disc,R981 ,50 grit,PK100 -- 12P760 [66261117918 from Saint-Gobain Abrasives]
from Grainger Industrial Supply

Locking Sanding Disc, Disc Dia. 1 1/2 In., Grade Coarse, 50 Grit, Attachment Type Roll-On/Off, Attaching System TR, Abrasive Type Closed Coat, Abrasive Material Ceramic Aluminum Oxide, Backing Material Waterproof Cloth, Backing Weight Y, Max. RPM 30,000, Color Red, Series R981, Package Quantity 100 [See More]

  • Mounting: TR
  • Type: Aluminum Oxide
  • Outer / OD: 1.50
Metalite® R228 Speed-Lok TR Cloth -- 66261121009
from Norton Abrasives

Metalite ® R228 Speed-Lok TR Cloth [See More]

  • Mounting: QuickChange; Male Quick Change
  • Outer / OD: 1.50
  • Disc / Backing Type: Cloth
  • Type: Aluminum Oxide
Non-Woven Nylon Disc -- 90863
from Dynabrade, Inc.

For use with 4" diameter disc sander, SE coarse brown [See More]

  • Mounting: Roloc
  • Outer / OD: 4.00
  • Disc / Backing Type: Nonwoven
  • Type: Alumina Zirconia