There are different pipettes in glass and PP materials for your options and also for different teats in rubber and PVC material
Glass Pipettes: lengths and heads can be made as per your requirements
Glass pipettes' heads: in bent, bent ball , ball , round and conical for your options
Teats: Rubber and PVC, nitrile and silicon rubbers,and the colors can be made as per your requirements
22-400 Black Glass Dropper with Rubber Bulb and Glass Pipette Matched for 4oz Boston Rounds