Fisherbrand Super one Nin-filter Pipet tips in hinged Racks Beveled Pipet tips 300ul Natural Fisher Scientific Flush Fit Inserts sit flush with rack, allowing easy multichannel pipetting Recycle Logo molded into all rack components Notched clasp props lid open for autoclave venting Sure Stack lid rim prevents racks from sliding around when stacked and carted around a lab Safe-Lock latch allows for one-handed open and closing ability and won't pop open when dropped Sure-snap design securely holds insert in place, preventing it from being lifted out while pipetting Reversible flip-lid can be either a hinged or lift-off lid; hinged format does not prevent the use of a multichannel pipet