This durable skin is made from a soft silicone rubber, with a reinforced edge for extra durability. The 10mm keyless chuck allows you to change bits quickly and easily without needing any tools, while the 21+1 torque settings allow you to choose the right power for any job. The LED worklight illuminates dark spaces so you can see what you're doing. And finally, the variable speed trigger controls the speed of your drill so that you can get the perfect amount of torque every time.