This product is a Koto KSR1500/60/P50 EasyFit Metal Halide stage/studio light bulb. It uses 1500 watts and has a PGJX50 base..

Features:
- Abbreviation Name: KSR1500-60-P50-EasyFit
- Base: PGJX50, Bulb Type: Metal Halide
- Color Temperature (K): 6000K
- Lamp Finish: Clear, Luminous Flux (LM): 130000
- Rated Life (Hours): 750
- Voltage: 100, Wattage: 1500

Cross Reference Part Numbers:
- GE CSR1500/TAL/60/S
- Osram 54225 HTI 1500W/60/P50 Lok-it
- Philips MSR Gold 1500/1 FastFit
- KSR 1700/60/P50 EASY FIT KOTO
- KSR 1500/60/P50 EASY FIT KOTO
- MSR GOLD 1500 FastFit Philps 245670
- Lok-it HTI 1500W/60/P50 OSRAM 54225
- MSR GOLD 1500 FastFit Philips 28697-1
- CSR 1500/TAL PGJX50
- Koto EasyFit KSR 1500/6000K/PGJX50

Abbreviation Name	KSR1500-60-P50-EasyFit
Base	PGJX50
Bulb Type	Metal Halide
Bulb Shape	T1
Color Temperature (K)	6000K
Lamp Finish	Clear
Luminous Flux (LM)	130000
Maximum Overall Length (in)	4.60
Rated Life (Hours)	750
Voltage	100
Wattage	1500
Width (in)	1.81