This NSK attachment for Electer Emax and Rotus systems is perfectly designed for powerful, yet delicate cutting and grinding. This attachment is slim and lightweight for comforable gripping. Open collet to release tools by twisting front grip. • Weight : 3.25 oz. • One-touch type bur replacement. • Wrench is not required to exhange the chuck. • Collet Chuck Standard Sizes : ø1/8" and ø3/32" ø1/16" and ø3.0mm collets also available • NSK Catalog Number: RE11008 Included Equipment: • CHH Collet Chucks ø1/8" (RE11630) & ø3/32" (RE11625): 1 pc. each • Wrench (7 x 5.1) RE10207 : 1 pc. • Pin Wrench (K-233) : 1 pc.