uxcell&reg; PF-083A 10A 250VAC Rail Mount Power Relay Socket Base for MK2P Product Name : Socket Base;Model : PF-083A;Fit for : MK2P Rated Load : 10A 250VAC;Pin Quantity : 8 Total Size(Approx) : 5.5 x 4 x 2.1cm / 2.2" x 1.58" x 0.84"(L*W*H);Installing Hole Dia. : 4mm / 0.158" External Material : Plastic, Metal;Main Color : Black Weight : 35g;Package Content : 1 x Socket Base