China Casters One-way casters are generally composed of brackets and wheels, which can only move in a straight line and are widely used in the medical industry. Since the material of the wheels can be adjusted according to the ground, it can better protect the ground and floor Shipping Ways: 1. We have solid inland freight transportation which provide fast and secure delivery services to the main airport and sea port in China on time. 2.For regular mass production, SEA Freight (FOB/ CIF) services are available to meet your desired deadline and budget. China Casters website:http://www.blyshares.com/casters/