Greasable Pins allow easy lubrication of polyurethane bushes. Serviceable design built from stronger and thicker steel. Four lubrication outlets for improved grease coverage. A cost effect insurance for the life of your leaf springs. Ironman 4×4 Suspension was the first company in the world to recognize the importance of greasable shackles and pin kits. The reason for the introduction of greasable kits was that polyurethane bushes will provide extra long life if they are greased. Ironman shackle and pin kits are perfectly matched to be fitted with Ironman polyurethane bushes and come complete with protected grease nipples, recessed nuts and washers. To enhance appearance and make them rust resistant, Ironman greasable shackle and pin kits have been zinc rich coated.