Lost my chuck key for hammer drill. Purchased 1/2 chuck Key but it is to big.
What did I do wrong. See specs
Name 1/2" Hammer Drill
SKU 94436
Brand Drill Master
Amperage (amps) 4.2
Maximum speed (rpm) 2800
Voltage (volts) 120
Chuck size (in.) 1/2 in.
Cord length 5-1/4 ft.
Product Weight 4.25 lbs.
Accessories Included Depth rod, depth stop, chuck key, side handle
Warranty 90 Day