Waterproof laminated mounting board with full ply at bolt holes for added strength. Large stainless steel flat 1-1/8" head elevator bolts. Husky secured stainless steel torsion springs help counterbalance motor weight. Simple four position locking bar snaps locked in either elevated or lowered position. Stainless steel guide pin slides in groove for smooth action. Unique adjustable brackets to set correct trim angle. Tough 18-8 stainless steel mounting bolts and instructions included. Positive or negative trim adjustment allows pre-setting of trim angle of motor for optimum motor performance.