... -6510A for soft rubber, leather ect HT-6510D for hard rubber, plastic products ect Measurement range:0-100HA(HD) HT-6510A for soft ... rubber, leather ectHT-6510D for hard rubber, plastic products ectApplication: Shore ... neoprene, silicone, and vinyl. It can also be used for soft plastics, felt, leather and similar materials.Shore D is ...