Specifications: Type: CAT40 ER32-70 Material: Stainless steel Speed: 25000RPM Quantity: 5 Notes -Maintain collets rust preventative & rack. Use the correct collet nut. Keep collet clean and dry. Package Included: 5 x CAT40 ER32-70L Balance Collet Chuck MATERIAL: High density stainless steel, great processing and fine making for durability and toughness. FEATURES: Absorb the shocking and the impact power, High speed, the transient equilibrium adjusts G2.5 / 25000rpm. Gage or projection length of ER32 is 2.76 (70mm). SERVICE: 100% Satisfaction guarantee and reliable customer service within a 24 hour time support.