claw coupling meaning in English

牙嵌式离合器
爪形联接器
爪形联结器
爪形联轴节
爪形联轴器

Couplings for compressed air - claw coupling , 42 mm internal width , with securing nut - coupling with male , female and hose connection ends , joint ring
压缩空气匹配件.爪状匹配件,带安全螺母内部宽度42mm ,
Couplings for compressed air - claw coupling , 42 mm internal width , without securing nut - coupling with male , female , hose and closure connection ends , rotary claw couplings , joint ring
压缩空气匹配件.爪状匹配件,无安全螺母的42mm内宽,凸