NOVA 6014 75mm Bowl Chuck Accessory Jaw Set Dovetail walls are 3 x thickness of conventional jaw for rugged work holding - great for larger and heavier bowls Screws go right through the wall section to add more securing force where its needed most Same jaw fixing system across all NOVA Chuck models - total system interchangeability Holding power for large bowls and also moderate hollow forms Deep smooth walled dovetail holds wood gently but very firmly