Features and Benefits:�Drive-in grease fitting with straight head and barbed end for avoiding tapping of line�Nickel-copper alloy and zinc-plated for resistance to corrosion�Ball check valve for keeping out contaminants�1/4" length, 5/16" diameter serrated shank for secure seal1608-B Model Code: AD - Price is for 1 Each (part# 1608-B) This item features: -Used extensively to avoid tapping costs in a wide variety of applications. -Alemite serrated shank grips securely and simplifies the replacement of damaged fittings in old or oversized holes. -Recommended only for low and medium pressures. -Brand Name: Chaps . -Connection Type: Male/Male. -Type: Drive Fitting. Testing and approvals: -Passed 50-hour salt spray test required by MIL-F-3541 and SAE J-543-C. -Designed to meet MIL-F-3541 and SAE J543-C. Model Code  Model Description AALength:15/32 in [Max], Male Barb/Hose:1/8 in, Shape:Straight ABLength:33/64 in [Max], Male Barb/Hose:3/16 in, Shape:Straight ACLength:35/64 in [Max], Male Barb/Hose:1/4 in, Shape:Straight ADLength:35/64 in [Max], Male Barb/Hose:5/16 in, Shape:Straight AELength:37/64 in [Max], Male Barb/Hose:3/8 in, Shape:Straight AFLength:45/64 in [Max], Male Barb/Hose:3/16 in, Shape:Elbow - 65 AGLength:45/64 in [Max], Male Barb/Hose:5/16 in, Shape:Elbow - 65 AHLength:49/64 in [Max], Male Barb/Hose:1/4 in, Shape:Elbow - 65 AILength:5/8 in [Max], Male Barb/Hose:3/16 in, Shape:Straight AJLength:53/64 in [Max], Male Barb/Hose:3/16 in, Shape:Elbow - 45 AKLength:9/16 in [Max], Male Barb/Hose:1/8 in, Shape:Straight