IC socket is in double rows and has flat straight pins. The IC socket is the carrier between the chip and the PCB circuit board, which are good electronic components for connecting PCB boards chip. Material: Plastic, Metal; Pitch: 2.54mm/ 0.1; Row to Row Distance (Approx): 7.6mm/ 0.3; Size (LxWxH SBC 327 350 400 Small Block Chevy Roller Tip Rockers 1.5 Ratio 7/16 w/ Polylocks Will fit Following ModelsReplacement for Chevy Small Block Gen I 262 (1975-76), 265 (1955-57), 267 (1979-82), 283 (1957-67), 302 (1967-68), 305 (1976-86), 307 (1968-73), 327 (1962-69), 350 (1967-86), 400 (1970-80) STAINLESS STEEL ROLLER ROCKER ARMS FOR SMALL BLOCK CHEVY SBC 350 7/16" 1.5 RATIO ; Rocker Arm Style · Full roller ; Stud Size · 7/16 in. ; Rocker Arm Material... Replacement for Chevy Small Block Gen I 305 (1976-86), 307 (1968-73), 327 (1962-69), 350 (1967-86), 400 (1970-80) Replacement for Chevy Small Block Gen I 262 (1975-76), 265 (1955-57), 267 (1979-82), 283 (1957-67), 302 (1967-68) Shims Included: No Self-Aligning: No Rocker Arm Body Style: Standard Rocker Arm Material: Stainless steel Rocker Arm Finish: Natural Quantity: Sold as a set of 16. Package Includes: 16x Rocker Arms. 16x Studs. Rocker Arms GELUOXI Stainless Steel Roller Rocker Arm Set Djibouti Sbc Roller Rockers