Every screen-opening job on your bench starts the same way: you need a blade thin enough to slide under the glass without cracking it, and strong enough to survive stubborn adhesive without rolling at the edge. The RELIFE TK3 blade handles that first step of the disassembly workflow. You use it to break the seal on glued frames, separate the display from the mid-frame, and scrape leftover adhesive off the chassis before you move on to battery removal or board-level work.
Carbon steel gives the TK3 blade its durability. You get an edge that holds up across screen removal, adhesive cleanup, and general precision cutting on the bench without wearing down after a handful of jobs. RELIFE grinds the blade to 0.23 mm, which is thin enough to work into tight display seams where a thicker blade would crack the glass or gouge the frame. That thickness also cuts your risk of display damage when you're working on units with fragile OCA lamination or tightly glued back covers.
The blade back carries a design built for secure fastening, so it locks into a blade holder or handle without wobbling mid-cut. That matters when you're applying steady pressure to separate a stuck frame — a loose blade shifts under pressure and increases the chance of a slip that scratches the screen or nicks a flex cable underneath. High hardness on the cutting edge means you keep working through adhesive without the blade dulling halfway through the job, so you spend less time swapping blades and more time on the actual repair.
This listing covers the 5-piece pack, which is one small box from RELIFE's TK3 set. RELIFE packages the full set as 20 small boxes of 5 blades each, giving you 100 blades total when you buy the complete box. Buying the 5-piece pack lets you restock your bench without committing to the full quantity, which works well if you're testing the blade on your workflow or only need a top-up between bulk orders.
On the repair bench, you'll reach for the TK3 blade during screen disassembly, frame separation, and adhesive removal — the same steps that come up whether you're replacing a display, clearing corrosion after a display problem, or opening a unit for a battery swap. Technicians handling display problem cases lean on a thin, sharp blade at this stage because a dull or thick blade adds risk right when the screen is most exposed. The blade also works for general precision cutting and craft-style trimming when you need a controlled edge outside of phone repair specifically.
Because the TK3 is a universal disassembly blade rather than a device-specific part, it works across brands and models — you're not locked into one chassis type. Whether you're opening a Samsung, Oppo, Vivo, Infinix, Tecno, or iPhone unit, the same blade profile applies to the adhesive and frame-separation step of the job. That flexibility makes it a bench staple rather than a one-off purchase tied to a specific repair.
Keep a few TK3 blades in rotation rather than running one blade until it's fully dull. A fresh edge reduces the force you need to apply during prying, which directly reduces the chance of a slip on delicate components. Store spares in their original small box to keep the edges protected until you need them, since carbon steel blades can nick each other if left loose in a drawer with other tools.
