Standard Holder For T – 63 Quick Change Toolpost. T63 Quick Change Tool Set OF 10PCS. Tool Post For – Harrison, Bantams and Colchester – Any Lathe 5-1/2″ and 6″ Lathes. This Quick Change set includes; 9 standard holders, 1 Boring vee Holder. Main block dimensions – 72mm Square – 63mm High with a 5/8 Bore. Tool Capacity – 25mm. Our Motto: Right Quality. The Motto of the Company is to deliver the best products and services to the customers at most competitive prices. We ensure the product reaches you at the earliest. We are looking forward to your positive reviews and to build a long term relationship.