One old ce2 Map-tank.... 27/32 x 9/32 inch slip joint washers stock # 38809B Danco Co. you will need 2 of these. one punched carto I use xl's. and one drip tip. drill small hole in tank body, find plug to fit into that hole. Put washers on tank ( put together) put drip tip onto carto and put into tank ( will be a tight fit ) fill tank with syringe &plug hole. this thing will not leak or slide I have been using this thing for a month no probs ....enjoy, & tell me what you think !