King HP Series Conrod Bearing Set, .010" Suit Holden 253-304-308 (KBCR8007HP 010)CONROD BEARINGS, HOLDEN V8 Suit Holden 253 304 308 Part Number: KBCR8007HP 010 The HP Series featuring the Alecular metal structure used for high loads for short durations. Suitable for race applications such as drag racing which can benefit from a harder than Babbitt top layer material. Alecular also serves other performance applications that use nodular cast iron crankshafts, such as street strip and some levels of circle track racing.