Makita PT 80739 115×22.2 A40/Steel D-27034 ACC Flap Disc for sanding metal, plastic, wood and steel. Lasts 10 times longer than conventional bonded abrasive disc, with no need for Abrasive Wheel instruction. High productivity and excellent finish. Application: Steel, fabrication, automotive, derusting, deburring, welds, non-ferrous, plastic, wood. Features: Suitable for variety of materials: Ferrous, non-ferrous, plastics, woods etc. Fibre glass backing is lightweight, flexible, and quiet, it is the most popular backing for flap discs.