We will be closed from Monday, December 25th, through Monday, January 1st, 2024. The last day for shipping will be December 22, 2023. Shipping will resume again on Tuesday, January 2nd, 2024.
The reusable Johnnie Lok holds the plunger under vacuum pressure for easy syringe harvesting. The plunger is drawn back to the desired pressure level then twisted and locked securely.
