Unique patented cruciform design is made specifically for roofing bolts, to make driving easier and help prevent camming out
4 Drive wings provide increased contact with the drive edges, improving power transmission efficiency via a stronger and more secure location in the bolt. This dramatically reduces bolt head damage caused by traditional screwdriver slippage
Rare earth magnet maximises the connection with the roofing bolt for secure holding and easier start ups
¼” quick change shank is Twister impact rated for impact drivers
14mm diameter fits most 6mm thread bolts. Made in Britain from high quality alloy steel for durability. Patent No. 2 582 316
