General description Sealey AK6330 Premier Extension Bar Set is a 3-piece set designed for professional use. Made from forged Chrome Vanadium steel, these extension bars are heat treated and chrome plated, providing a durable and mirror-finish surface. The deep knurling on the shafts ensures a secure grip when loosening or tightening fixings. Technical specifications Material: Forged Chrome Vanadium steel Finish: Heat treated and chrome plated with mirror finish Lengths: 100 mm, 150 mm, 225 mm Model No.: AK6330 Lifetime guarantee* Other information Features spring-ball socket retainers for secure attachment Part of a comprehensive range of Premier Hand Tools