Carbon steel hardened lead screws and cast jaws. Wrapover coil claws for extra safety. Suitable for use where space under wheel arch is limited.2pc Coil Spring Compressor• Hardened carbon steel lead screws and cast jaws.• Wrapover coil claws for extra safety.• Suitable for use where space under wheel arch is limited.• Use with 1/2Sq drive wrench.• Maximum Jaw Opening: 244mm.• Maximum Capacity Per Pair: 1000kg.• Model No. AK3841Model No: AK3841:Brand: Sealey:Nett Weight: 1.84kg:Drive: 21mm Hex/1/2Sq:Maximum Jaw Opening: 244mm:Maximum Capacity Per Pair: 1000kg:PTDSEAAK3841