A reliable four‑piece lab clamp and holder set designed for precision, stability, and organization in professional laboratories. - Support rod clamp: Provides precise, secure fastening on standard lab rods for stable performance and reliable alignment during experiments. Made from durable metal and compatible with common rod diameters and clamps. - Laboratory jack stand: Sturdy, adjustable support that safely raises and supports glassware. Wide base for stability, smooth height adjustment, and reliable load handling in demanding lab use. - Ring clamp: Closed metal ring with oxidation and corrosion resistance. Durable under heat and solvents, maintains shape for repeated use, and provides a secure hold for flasks and beakers. - Ring holder: Versatile rack to hold glassware and related items, helping organize benches and keep equipment within reach. Can also serve as a display rack when not in active use. Use scenarios - Distillation setup: Attach the ring clamp to a stand to support a round‑bottom flask; use the rod clamp for a secure connection and place the receiver on the jack stand for stable collection. - Filtration or reaction work: Use the ring clamp to hold a funnel or condenser; keep spare glassware organized with the ring holder within easy reach. - bench organization: Store clamps and rings on the ring holder when not in use to keep the workspace tidy and safe.