Carbine hooks with safety screw lock and an eyelet. The eyelet can be used to secure rope, whilst the screw lock stops the gate opening accidentaly. Sizes available are 40mm long carbine hook, 50mm long with 5mm cross section carabiner, 6mm snap hook, 8mm wire at 80mm long, 10mm wire at 100mm long and 11mm at 120mm long snap hook
eBay