SCMTB300-10 300ul 300ul Pipette Tip, Bulk 1000pcs/bag, 10bags/ctn 4.65 44 37 23 300UL PIPETTE TIP All of the tips made from 100% polypropylene. Tips are designed to fit the most popular pipettors. 3package can be chosen: Bulk, Rack, Refill. 9 capacity for your demands: 10ul Short, 10ul Long, 200ul, 300ml, 1000ul, 1250ul, 5ml Short, 5ml Long, 10ml