Name: Transparent Horn Cover material: plastic Weight: 22 grams Electric grinding thread port 17.5-19MM Applicable models: Delta 100, 200, 275, 285, 300, 395, 398, 400, 770, 800, 3000, 4000, 8100, 8200, 8220, 4200 This product is suitable for steel heat treatment, boiler ash delivery, electroplating polishing, grinding wheel grinding, etc.; it can prevent damage caused by the splash of harmful objects such as acid, alkali, oil, chemical liquid, metal solution, iron filings or glass fragments, etc. Protect the entire face safely. Function: anti-splash, anti-impact, anti-arc, anti-chemical