Sealey Magnetic Socket Inserts - 10pc Metric Set. These magnetic socket inserts are designed to retain nuts and bolts within the socket, making them ideal for installing or removing fixings in tight, restricted, or sensitive areas. They can be used in both standard and deep sockets and are suitable for all drive sizes (1/4"Dr, 3/8"Dr, 1/2"Dr). Simply push the insert into the socket; a tight fitting will retain it in place. These inserts can be removed and reused if required. The set includes 10 pieces with sizes ranging from 10mm to 19mm. Sealey is one of the largest suppliers of garage and workshop equipment in the UK, offering a vast range of quality tools and accessories with dedicated quality control, R&D, and customer services, including full spare parts backup and experienced technical support.