Nut Blaster XXL Blue opening 7/8” plus wings. Fits all brands – Compaitble with 3M and Ideal's Large Grey and Blue, amongst others Durable – Made of high impact heat stabilized Delryn plastic and a steel shaft (1/4″ hex shank) Made in the USA. SAVES HANDS – Nut Blaster allows you to tighten wire nuts using a drill or driver, reducing the strain on your hands. Repetitive tasks like wire twisting without a wire nut tool can lead to carpal tunnel syndrome or general hand pain. Protecting your hands from injury by using a wire nut spinner means you can work longer and more efficiently. FAST – Instead of spending hours tightening wire nuts by hand, you can finish each one in 3-4 revolutions. Finishing faster means you can move on to other tasks. This wire nut twister saves you time and time is money.