The 4pcs Hex Screw Driver tool kit it is a amazing for RC, Helicopters, Planes, and Cars. Made with Chrome vanadium alloy steel, very durable and excellent quality for the price. These drivers actually have hexagonal shaped handles which allow a firm grip when turning, thus less likely to round off.
Specifications:
Diameter of handle:1.5cm
Total length: 17cm
Length of handle: 7.5cm
Package Included:
1x1.5mm Hex Key
1x2.0mm Hex Key
1x2.5mm Hex Key
1x3.0mm Hex Key