Stanley SK 58: Sinker Drill
Stanley SK 58: Sinker Drill
Diving + Life Support

Stanley SK 58: Sinker Drill

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Unique Group offers the Stanley SK58 Sinker Drill which is a heavy duty rock drill designed for drilling underwater in concrete, rock and masonry. The feathering on/off valve makes starting the drill a bit relatively easy.


T-Handle with feathering on/off valve allows easy start and control

Rotation speed adjustable between 0 and 300RPM

Stainless Steel spools and fasteners

Four tie rod design for durability

Uses standard rock drill steels: 1″ x 4¼” Hex Shank


Drill Capacity: 3″ (7.6cm) dia. hole, up to 20′ (6m) deep

Steel Type: 1″ x 4¼” Hex Shank

Circuit Type: Open Center

Flow Range: 7-9gpm / 26-34lpm

Optimum Flow: 8gpm / 30lpm


Can be used for drilling underwater submerged rocks and associated substances.

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