The Stanley HD45 Hammer Drill is a rotary, percussion hydraulic underwater tool used by commercial divers for underwater drilling in rock, concrete and masonry. Drills Holes from 3/4 in. (19 mm) to 2 in. (50 mm) in diameter and up to 29 in. (73.7 cm) deep plus requires no fluid or compressed air to clear holes during use.

The Stanley Hydraulic Underwater Hammer Drill HD45 is designed for commercial divers to use in medium to heavy underwater applications. The drill features a feathering On/Off Valve with adjustable bit rotation speed (forward and reverse) making the drill easy to start and control.

Control: T-Handle with large on/off trigger for precise control 

Quality Build: Stainless Steel spools and fasteners 

Speed: Forward-Reverse with adjustable bit rotation speed 

Easy Start: Feathering on/off valve allows easy start and control 

Drill Bits: Uses 736 Skil fluted carbide tipped drill bits - requires no water/air to clear holes 

Drill Sizes: Drills ¾" to 2" diameter holes up to 29" deep and core drills up to 4" in diameter 

Operates in any position 

Trouble free drill steel latch retainer

Chuck Capacity - Up to 2" diameter or 4" core bit 

Steel Capacity - 736 Skil hex 

Circuit Type - Open Center 

Flow Range - 7-9 gpm / 26-34 lpm 

Optimum Flow - 8 gpm / 30 lpm 

Working Pressure - 1500-2000 psi / 105-140 bar 

Full Relief Setting - 2250 psi / 155 bar 

Rotation Speed - 0 - 300 rpm 

Hydraulic Ports - -8 SAE O-ring 

Hose Whips - Yes ( 3 ⁄8" NPT Male thread)

Weight (less tool bit) - 49 lbs / 22.2 kg 

Length - 24½" / 62.2 cm 

Width (at handles) - 14" / 35 cm