Designed for freshwater use on both powerboats and sailboats, the Panther Adjustable Outboard Motor Bracket is constructed of heavy-duty, lightweight aluminum. Manual operation means no power is required to raise and lower your auxiliary outboard motor. The spring-loaded design allows 11" of travel with 4 stops. Not for use with 4-stroke engines. Model#: 55-0021.SPECIFICATIONS:* Rated For Motors Up To 20hp Or 115 lbs.* Setback Up: 6.75" (17.1 cm)* Setback Down: 12" (30.5 cm)* Stainless Steel Mounting Hardware (5/16" - 18" x 3") Included* Weight: 12 lbs.* Pad Size: 8.5" x 10.5" x 1.75" Manual operation - no power needed to raise/lower Spring-loaded design allows 11" of travel Not for use with 4-stroke engines | Aluminum Outboard Motor Bracket