... , Roll type 3.Free speed: 11000 rpm 4.Front exhaust. Pneumatic Grinder:Features:Angle heas provide easy access into tight space ideal ... for grinding,edgbreaking,deburring.Specification:1) 4",5" air angle grinder (roll type) 2) Free speed: 11,000rpm3)Air inlet: 1 ... )Overall length:230mm8)Net weight: 2.2 kgs9)Front exhaust Pneumatic grinder