Norton 8834154128 5-1/2x1-1/2 In. Merit AO Plain Flap Coarse Grit Bore Polishers B-425 for 3-1/8 In. to 4 In. Interior Diameter, P80 Grit, 10 pack

• Solid flaps coated with aluminum oxide abrasive
• For 3-1/8 inch to 4 inch interior diameter bores
• Features 4 packs of abrasive flaps, 1-1/2 inch wide, on Y-weight cotton/poly backing, bonded to hub
• Use with BPM-4 mandrel part no. 08834154183; extension mandrels are available for deep holes
• 80 grit for sizing cylinders and blending out medium machine marks

Bore polishers are used for deburring, cleaning and polishing of the interior diameters of cylinders, tubes and hydraulic fittings. Flaps of abrasive cloth are stacked, inserted into a holder, and then attached to a mandrel. The flaps are designed to break down during use and reveal the next layer of abrasive. The flaps automatically adjust to the inside diameter, cleaning the entire surface with one pass. A self-centering, spring action design gives a fast and easy way to handle all inside diameter jobs. Use with BPM-4 mandrel part no. 08834154183. Extension mandrels are available for deep holes: 4” part no. 08834154185, 6” part no. 08834154186, 8” part no. 08834154187. Package of 10.

Series:  Merit

Material:  Aluminum Oxide

Grit:  80

Application:  3-1/8" to 4" Interior Diameter

Max RPM:  10000

Package:  10