Type PS 33 CK BK - with dust extraction holes GLS1 GLS3 GLS38 GLS52 Backing - type C (CK) or type B (BK) paper Abrasive - semi-open electrocorundum Bond - synthetic resin
Type KL 381 J Backing - light cloth type J - brown Abrasive - regular full electrocorundum Bond - glue - resin Application: standard product for machine and hand grinding