General description Sealey Wobble/Rigid Extension Bar Set includes 7 pieces with 1/4", 3/8", and 1/2" square drive options. The set features forged Chrome Vanadium steel shafts that are heat treated and chrome plated with a mirror finish, ensuring durability and a professional appearance. It allows off-centre driving of sockets at angles up to 10° from the centre axis or at 0°. The set is supplied in a convenient storage tray. Technical specifications Brand: Sealey Model No.: AK770 Material: Chrome Vanadium Nett Weight: 1.19 kg Drive Sizes: 1/4", 3/8", 1/2" Sq Lengths: 1/4" Sq; 100 mm, 150 mm; 3/8" Sq; 75 mm, 150 mm, 250 mm; 1/2" Sq; 125 mm, 250 mm Other information Lifetime guarantee*