This light-weight, pencil-style NSK Mini-Luster for the Espert 500 system is ideal for small, intricate work where the larger pistol grip profilers would be cumbersome. Maximum allowable motor speed - 30,000rpm continuous use. • Reciprocating Stroke (variable): 0~10,000 times/min (Max.) • Stroke Range: 0.8 mm • Weight: 4.59 oz. • NSK Catalog Number: ES51554 Included Equipment: • Standard Accessories : 1 set (see chart for Accessory list) • Allen Wrench (1.5 mm) : 1 pc.