The magnetic pivot drill bit holder is made of high-hardness chrome vanadium steel, which can withstand the high torque output of the cordless impact screwdriver. Pull the metal ring to switch to linear mode for arm extension, linear length is 3.5 inches. 20 degree pivot mode allows for tight space accessibility. There are magnetic parts inside the swivel bit holder, you can easily insert and remove the bits. The bracket is suitable for any cordless impact tool. Quick change/release bit holder fits any 1/4ł hex head screwdriver bit perfectly. Perfect tool for fixing screws. The drill bit extension holder is delivered by Amazon and arrives safely and quickly. We will provide replacement and refund service up to 90 days. OUR GUARANTEE We are confident that we offer some of the best products on the market. Therefore, we provide a 30-day guarantee. We will make every effort to ensure that you are completely satisfied with your purchase. Online shopping can seem daunting. We want you to know that there is absolutely zero risk of purchasing something. We won't make it difficult if you don't love it. We offer email and ticket support 24 hours a day, 7 days a week. If you require assistance, please contact us. Please contact customer service if you have any problems with your purchase.