Feature: 1. Natural rubber is made by processing, whixh has strong elasticity, soft hand feeling and rapid inflation. 2. The parts are tightly connected and leakproof; selected material ensures strong aging resistance. 3. Thickened air sac is explosion‑proof and rupture‑proof, which is very practical. 4. Laboratory rubber ball is made of high‑quality rubber, which is non‑toxic, tasteless, safe and durable. 5. Easy to operate, connect the rubber air pipe to the instrument or equipment that needs to be refilled, and manually squeeze the rubber ball. Specification: Item Type: Rubber Squeeze Bulb Material: Rubber Purpose: The rubber trachea is connected to the instrument and equipment that need to be refilled (automatic burette, safety refueling syringe, etc.), and the rubber ball is manually squeezed to play a positive pressure to pressurize the instruments and equipment to get the required pressure. Product Composition: It is composed of rubber tube, air sac, choke valve, rubber ball and air inlet valve. Overall Length: Approx. 410mm / 16.1in. Package List: 1 x Rubber Squeeze Bulb