This NSK 45° Angle Attachment for the Espert 500 system comes with a ø1/8" Collet Chuck. This NSK attachment is conveniently small and ideal for corner work, and grinding inside cavities and restricted areas. • Reverse rotation against the motor • Speed Reduction Ratio: 3/4 • Collet Chuck Standard Size: ø1/8" (CHC-3.175) • Weight : 1.90 oz. • NSK Catalog Number: ES81526 Includes: • Collet Chuck ø1/8" (CHC-3.175): 1 pc. • Chuck Wrench (K-231) : 1 pc. • Wrench (20 x 24) : 1 pc. • Standard Accesories (Rubber Pad, Paper Disc): 1 set