The Snap-on 9-pc. 3/8"-drive fractional low profile socket set, No. 209RF, and the 9-pc. 3/8"-drive metric low profile socket set, No. 209RFSM, offer access to tight areas including under-dash cramped quarters. Use either set for torque converter bolts, under cowls on late model pickup trucks, transmission bolts on transverse mounted engines or mobile repair kits. Manufactured from special alloy steel. Nickel/chrome plating helps protect against corrosion.