Adjustable clip holder, boss head clip, piston clamps and round head clamp — versatile support accessories for laboratories, schools, and home use. Designed to secure glassware and equipment quickly and safely while keeping setups stable and adjustable. Key benefits Secure, hands-free holding: reliably holds test tubes and small apparatus so you can work safely and precisely. Versatile compatibility: fits standard laboratory support rods and common laboratory glassware; suitable for household and educational projects. Stable positioning: piston clamps and round head clamp allow fixed, repeatable angles and firm support to reduce slippage and breakage. Comfortable operation: boss head clip features user-friendly buttons for easy gripping and adjustment during setup changes. Space- and time-saving: adjustable designs let you change angle and height quickly without replacing parts. Product functions and attributes Adjustable clip holder: multifunctional test tube holder that clamps a range of tube sizes and shapes. Useful for holding samples during reactions, heating, or observation. Boss head clip: secure connector that fastens clamps to support rods; designed with comfortable buttons for easy tightening and release. Laboratory piston clamps: enable right-angle fixation of a clamp on a stand for precise, stable positioning of apparatus. Ideal when a fixed perpendicular layout is required. Round head clamp: general-purpose clamping accessory with an adjustable bracket suitable for routine lab tasks or home-use projects. Performance and build (general) Adjustable mechanisms provide repeatable positioning and steady support for routine lab procedures. Designed for frequent repositioning and straightforward attachment to standard support stands. Intended for use in households, laboratories, research institutes, schools and similar environments. Practical use scenarios Chemistry benchwork: hold test tubes during heating, mixing or titration while keeping hands free and minimizing the risk of spills or breakage. Educational labs and demonstrations: quick setup and secure holding for school experiments where fast, repeatable positioning and easy adjustments are needed. Home DIY and craft projects: stable clamping for small parts, model work, or hobby tasks where precise alignment and hands-free support help improve accuracy and safety. What you can expect A set of complementary clamping accessories that work together to build adaptable, reliable support assemblies for everyday lab and household applications. Simple installation on standard lab stands and straightforward adjustments to meet common experimental and project needs.