Accurate diameter, whole sheet no joint, density inside, good for cutting slot onside to be inserted with rule, blade, or punch. Our dieboard is very accurate in diameter, curved degree, inside is very dense, good for used as dieboard for cutting formes making. Material: BEECH.Specification as belows: Specification/ dia. X length x thickness (mm)290*1800*13290*2000*13290*2200*13290*2400*13290* ...