uxcell 10 Pcs 6mm Dia Male Thread Straight Grease Nipples Product Name : Grease Nipple;Thread Size : 6mm / 0.236"(M6) Design : Straight;Overall Size : 13x 7.5mm / 0.5" x 0.3" (H*Max.D) Material : Brass;Color : Brass Tone Weight : 16g Package Content : 10 x Grease Nipple