These new drill bits are made of Tungsten Carbide. The over all length is 1.50". The shanks have a diameter of .1250 and all have identification rings on them labeling the size. These bits are very hard and will not walk with the grain of the wood like cheaper bits do. They do drill a shallow hole so you will either need to clip your axles or add a pin vise to your order to use a normal bit to deepen the hole. The Tungsten Carbide make up will also ensure the bit stays sharp and performing well for a much longer time. Use the #43 for Dynasty and Edge line of axles.

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