Slappy Hollow Lights Trucks with Ultra Low Inverted Kingpin. The gold standard for grind clearance. Ultra low inverted hollow kingpin and shorter top bushing for more grind clearance, increased slappy angle. Forged baseplate. More kingpin thread for looser or tighter trucks. Slappy Hollow Lights Trucks with Ultra Low Inverted Kingpin. The gold standard for grind clearance. Ultra low inverted hollow kingpin and shorter top bushing for more grind clearance, increased slappy angle. Forged baseplate. More kingpin thread for looser or tighter trucks. Includes 2 Trucks. 9.0 Axle Length UPC 810179488680 Size 9.0 Color Matte Black/Gold Brand Name Slappy Manufacturer Slappy Manufacturer Part Number TR-SLP775 Global Trade Identification Number 00810179488680