Specification Brand : Hiturbo BulletPoint1 : 【Protect diving equipment】The piston end caps of the second stage regulator are mostly made of plastic, and bumps and damages occur from time to time due to the bumpy journey. As one of the core equipment of scuba diving, any failure may cause diving safety problems. Wear your second stage head Protective cover, safe diving. BulletPoint2 : 【Universal design】The second stage head protective cover adopts special , which is suitable for most models of second stage head BulletPoint3 : 【Applicable group】Suitable for people who often dive, or as a gift to your diving friends. BulletPoint4 : 【Package includes】2nd stage head protective cover×2, product size(10.6 in*4.7 in) BulletPoint5 : Inserted and removed with 8mm hex allen key (not included). G5/8 Thread. Color : 2-Blue ExternallyAssignedProductIdentifier : 5695090757993 GpsrSafetyAttestation : 1 ItemName : Hiturbo Regulator Second Stage Protector Cover for Scuba Diving Gear Equipment (Blue) ItemPackageDimensions_Height : 25.0952 centimeters ItemPackageDimensions_Length : 2.8956 centimeters ItemPackageDimensions_Width : 11.303 centimeters ItemTypeKeyword : diving-regulator-accessories Manufacturer : Hiturbo ModelNumber : PV-0028 PartNumber : 123456 ProductDescription : Description: Easy to install and replace. Durable brass construction that corrosion resistance. Converts DIN tanks to yoke tanks so they will fit your regulator's first stage. Inserted and removed with 8mm hex allen key (not included). G5/8 Thread. Diameter:Approx.22mm/0.9inch;Height:Approx.15mm/0.6inch