DR4AH-10R-B DR4AH-16R-B DR4K3.5_INVAR_B&W_V5 DR4K3.5_INVAR_B&W_V6 DR4K3.5_INVAR_B&W_V6 DR4K3.5_INVAR_B&W_V6 FT SE DR4K3.5_LCC_B&W_CERA DR4K3.5_LCC_B&W_CERAMIC_V1.0 DR4K3.5_LCC_B&W_CERA DR4K3.5InvarB&WV5