This NSK attachment for Electer Emax and Rotus systems is perfectly designed for powerful, yet delicate cutting and grinding. Slim design and lightweight for a comforable grip.• Weight : 2.19 oz.• Convenient collet release lever, no wrench required. Just turn the lever 90° to release tool.• Collet Chuck Standard Size : ø1/8" & ø3/32" 1/16" & 3.0mm also available• NSK Catalog Number: RE10178Included Equipment:• CHH Collet Chuck ø1/8" (RE11630), ø3/32" (RE11625) : 1 pc. each• Wrench (7 x 5.1) : 1 pc. • Pin Wrench (K-233) : 1 pc.