Here are some good 5 metre HDMI cables that support “8K 48 Gbps / HDMI 2.1” — which is what you asked for ✅

🔌 Recommended 5 m HDMI 2.1 / 8K 48Gbps cables

My take on them

• Amkette Ultra High Speed HDMI 2.1 Cable 8K 5M — A trusted brand cable, certified HDMI 2.1 with full 48 Gbps bandwidth, supporting 8K@60 Hz / 4K@120 Hz. Good pick if you want something reliable for consoles (PS5 / Xbox) or 8K TVs. Amkette

• UGREEN 5M HDMI 2.1 Cable 8K 60Hz 48Gbps — Great all‑rounder cable, widely available, and supports all major HDMI 2.1 features (48 Gbps, eARC, HDR, VRR etc.). 

• DigiReach HDMI 2.1 Cable 5M 8K — More budget‑oriented but claims 8K / 48 Gbps support, enough for TV/monitor setups if you don’t want to spend much.

• Bestor 5M 8K HDMI Cable — Another 5 m, 8K‑ready cable; good if you prefer a slightly different brand and comparable specs.

• Honeywell HDMI Cable 2.1 with Ethernet — Slightly pricier option with extra build‑quality, and Ethernet support built-in. Might be useful if you also need network passthrough (rare for HDMI but sometimes included).

⚠️ Things to check / keep in mind:

• For 5 m length, HDMI 2.1 cables must be certified (or at least from a reputable brand) to reliably deliver full 48 Gbps bandwidth. Passive cables over long lengths sometimes struggle, especially if not well‑shielded. 

• Make sure your TV / monitor / console (or other device) supports HDMI 2.1 / 8K/4K high refresh rates — cable alone can’t guarantee that.

• Features like HDR, VRR, eARC, 4:4:4 chroma can vary by cable. If you use high‑end gaming or 4K/8K HDR video, go for a “Ultra High Speed / HDMI 2.1 certified” cable from a trusted brand (like Amkette or UGREEN). 

If you like — I can filter 5 m HDMI 2.1 cables available in India under ₹1500 (budget‑friendly), and show you 5–10 of the best deals.
Do you want me to build that list for you now?