GTC030-20-27S-027 GTC030-20-27S-B30 GTC030-20-27S-B30-025 GTC030-20-27S-B30-LC GTC030-20-27S-LC GTC030-20-27S-LC-027 GTC030-20-27SW GTC030-20-27SW-025 GTC030-20-27SW-025-B30 GTC030-20-27SW-025-B30-LC