Drill bit extension kit: This set of drill bit extension kits is 8 pieces, including 2 pieces of flexible drill bit extensions, 3 pieces of 1/4 3/8 1/2" universal socket adapter set, 1 piece of screwdriver bit set, 1*105° right angle drill bit Expansion, perfectly matched to meet everyday needs. Socket Adapter Set: There are 3 different sized socket adapters, 1/4", 3/8", 1/2", but they have the same size hex bit, 1/4"; you can use them with Fits your air screwdriver, electric screwdriver, pneumatic drill, hand screwdriver and other hex tool installations. Universal Socket Wrench: The unique design of this universal socket automatically adjusts to any size or shape for standard 1/4 to 3/4 inch and metric 7mm to 19mm screws, nuts and bolts for all your needs. Bendable Flexible Drill Extensions: Bendable drill extensions can twist and rotate at many different angles. It can burrow into tight spaces, in various crevices instead of your hands, for flexible installation work. Let our